AQA GCSE Combined Science Trilogy · 8464
Specification 5.3.1.1, 5.3.1.3, 6.3.1.2 · Paper 3, Paper 5
The principle that no atoms are lost or made during a chemical reaction, so the total mass of the products equals the total mass of the reactants.
Revise: Conservation of Mass and Balanced EquationsThis is the law of conservation of mass.
- Revise: Mass Changes Involving Gases
The principle that the total mass of all reactants equals the total mass of all products in a chemical reaction: atoms are rearranged, not created or destroyed.
- Revise: Changes of State
The principle that the total mass stays the same: no matter is created or destroyed.